Fix repositories for designate dns01/02 nodes

Change-Id: If56c3bbd81d692788058ce19db8e9f36ef718532
diff --git a/tcp_tests/templates/virtual-mcp-ocata-dvr/_context-environment.yaml b/tcp_tests/templates/virtual-mcp-ocata-dvr/_context-environment.yaml
index ca8114b..91f76f6 100644
--- a/tcp_tests/templates/virtual-mcp-ocata-dvr/_context-environment.yaml
+++ b/tcp_tests/templates/virtual-mcp-ocata-dvr/_context-environment.yaml
@@ -146,6 +146,11 @@
       roles:
       - features_designate_pool_manager_dns
       - linux_system_codename_xenial
+      classes:
+      - system.linux.system.repo.mcp.extra
+      - system.linux.system.repo.mcp.apt_mirantis.openstack
+      - system.linux.system.repo.mcp.apt_mirantis.ubuntu
+      - system.linux.system.repo.mcp.apt_mirantis.saltstack_2016_3
       interfaces:
         ens3:
           role: single_dhcp
@@ -158,6 +163,11 @@
       roles:
       - features_designate_pool_manager_dns
       - linux_system_codename_xenial
+      classes:
+      - system.linux.system.repo.mcp.extra
+      - system.linux.system.repo.mcp.apt_mirantis.openstack
+      - system.linux.system.repo.mcp.apt_mirantis.ubuntu
+      - system.linux.system.repo.mcp.apt_mirantis.saltstack_2016_3
       interfaces:
         ens3:
           role: single_dhcp